Hubert f



H. F. KRANTZ.

SWITCH PANEL.

APPLICATION FILED MAR. 10. I916.

1 ,306, 342. Patented June 10, 1919. I

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$51 lad/s akin Mau STATES PATENT OFFICE.

HUBERT F. KRANTZ, OF BROOKLYN, N EW YORK, ASSIGI'IOI-t TO KRANTZ MANUFACTUK IN'G COMPANY, IN 0., OF BROOKLYN, NEW YORK, A CORPORATION OF NEW YORK.

SWITCH-PANEL.

Specification of Letters Patent.

Patented June 10, 1919.

Application filed March 10, 1916. Serial No. 83,247.

citizen of the United-States, and residing at Brooklyn, in the county of Kings and State of New York, 'have invented a new and Improved Switch-Panel, of which the fol.

lowing specification is a full disclosure.

Thisinvention deals with switch-boards,

and it proposes a very simple and compactswitch-mechanism of the type especially adapted for panel-boxes and the' like.

A primary object is to create a switchboard in which as few parts as possible can be used while yet affording every facilit of ooer-ation and ever de ree ofsafety in point of usage.

A further purpose of this invention is to provide a simple switch-system affording a direct connection from a bus-bar to a branchdine terminal by the use .of a single switch-element and without necessitating the employment of a multiplicity of contactelements.

Other objects will be in part obvious from the annexed drawings and in part indicated in connection therewith by the following analysis of this invention.

This invention accordingly consists in'the features of construction, combinations of parts, and in the unique relations of the .members and in the relative proportioning and disposition thereof; all as more completely outlined herein.

To enable others skilled in the art so fullyto comprehend the underlying features thereof that they may embody the same by the numerous modifications in structure and relation contemplated by this invention, drawings depicting a preferred form have been annexed as a part of this disclosure, and in such drawings, like characters of reference denote corresponding parts throughout all the views of which Figure 1 is a plan view of a panel-box embodying this invention, and showing the lnethod of application whereby branch-line circuits may derive current from main bus-bars. Fig. 2 is a longitudinal section of Fig. 1 and Fig. 3 is an external plan of the box; Fig. 4 being a detail. In the drawings A indicates a base-board of insulating material which, together with the side-Walls, B and 0 form a box or basin. Within this box are arranged a series of parallel bus-bars X, Y and Z which are above the bottom. so asto overlie the crossbars 03, 3 and z with which they are re' spcctively. connected. These cross-bars lie on the base-board A and terminate in proximity with the switchsblades 1, 2 and 3; preferably consisting of a plurality of copper laminations arranged in echelon as shown and adapted to be rotated about the axis 4-. Branch-line terminals D, E and F are arranged on. one side of the base-board A in opposition with the respective crossbars 00 3 and 2, and these branch line terminals provide contact-portions (Z, c, and f, which lie in an upper plane diagonally oppositethe contact-portions .of the cross-bars a: y and a so that the switch-blades 1, 2 and 3 may establish electrical connection diagonally across the intervening space. i

The switch-mechanism is mounted directly on the base-board A, as by means of the side-standards 5 and 6, and the pivot extensions 4: of the switch-blades are pivoted in these side-standards, and a spring 7 is arranged so as normally to urge the switchblades 1, 2 and 3 into their open-circuit positions. By means of a handle G the mechanism may beset to look the switchblades diagonally into direct contact with the branch-line terminalsand the cross-bars, respectively; preferably by means of a toggle-mechanism forming a component part of the switch-mechanism. Thus, the handle is secured to a swinging yoke S, which is carried by the pivots 9 and 10 mounted on the standards 5 and 6. This yoke also provides an arm 11 which provides a pin 12 in its outer end, and. this pin in turn actuates a bell-crank 13 alsomounted on the pivot 10. A toggle link 16 is also mounted by one of its ends upon the pivot 10 and is connected at its opposite end by a pivot pin 17 to a second toggle link 14 which in turn is connected with the actuating arm 15 of the switch-blade proper. This switchmechanism is substantially the same .as that described in my copending application No. 12,956 filed July 31, 1915. The bell-crank 13 provides opposing spaced shoulders 18 and 19 arranged to engage the knee of the toggle to throw the toggle into either of its extreme positions, the space between the shoulders providing the necessary lost motion whereby to enable the toggle to shift freely. Any suitable means may be employed for limiting the movements of the toggle, as for instance, the standard 6 may be provided with an arcuate slot 19, as indicated by the dotted lines in Fig. 4 said slot being positioned to receive a portion of the pin 17. Engagement of the pin against the opposite end walls of the slot will determine the limits of movement of the toggle.

It will be observed that this switch-mechanism as a whole is supported on the baseboard A and that the same is covered entirely, including all live parts, by means of a cover-plate H thereby creating a very safe organization.

Without further analysis, the foregoing will so fully reveal the gist of this invention that others can by applying current knowledge readily adapt it for various applications without omitting certain features that, from the standpoint of the prior art, fairly constitute essential characteristics of the generic or specific aspects of this invention, and therefore, such adaptations should and are intended to be comprehended within the meaning and range of equivalency of the following claims.

Having thus revealed this invention, I claim as new and desire to secure the following combinations of elements, or equivalents thereof, by Letters Patent ot' the United States:

1. A panel box made up of top, bottom and side walls defining an inclosure, a bus bar mounted upon the bottom wall within the inclosure, a branch line terminal member also mounted upon the bottom wall within the inclosure and having a portion extending upwardly from the bottom wall terminating in a contact part spaced upwardly from said bottom wall and from said bus bar, a pair of standards also supported by said bottom wall and projecting up wardly therefrom within the inclosure, a switch blade carrier pivotally mounted by said standards upon an axis substantially parallel with said bottom wall and in a plane intermediate the bus bar and said contact, a switch blade connected with said carrier having a pair of contact portions project-ing laterally in opposite directions from the pivotal axis of the carrier adapted when the carrier swings to engage the bus bar and said first contact respectively, and

means projecting through the top wall of the inclosure to a position of accessibility for swinging said switch blade and carrier at will.

2. A switch mechanism combining a casing, a bus bar arranged within the casing, extending along one wall thereof, a pair of independently operable switch mechanisms arranged within the casing one adjacent each of the opposite ends of the bus bar and being spaced apart to provide an open space between them, a main line feeder extending into said open space and being connected with the bus bar intermediate the ends of the bus bar, a pair of branch line terminals one adjacent each end of the bus bar, said branch line terminals being supported by the mentioned wall of the casing but having portions extending away from said wall and terminating in contact parts spaced diagonally from the respective adjacent end portions of the bus bar, each of said switch mechanisms including a switch blade operable to close circuit between the bus bar and the adjacent branch line terminal, and an operating handle for each switch mechanism projecting through another wall of the casing to a position of accessibility exteriorly of the casing.

3. A switch panel comprisin a box made up of top, bottom and side walls, a. bus bar lying upon the bottom wall within the box, a branch line terminal member mounted upon the bottom wall within the box and having a portion bent upwardly from said bottom wall terminating in a contact part spaced upwardly from the bottom wall and from said bus bar, a switch blade, and operating means therefor extending through the top wall, said switch blade being double ended and being pivotally supported at its mid portion adapted to swing one of its ends toward the bottom wall into engagement with the bus bar and its opposite end away from the bottom wall into engagement with the branch line contact.

In witness whereof, I hereunto subscribe my name, as attested by the two subscribing witnesses.

HUBERT F. KRANTZ.

Witnesses J. A. NEWTON, JOHN L. KoLLE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

